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STR71XF Datasheet(PDF) 8 Page - STMicroelectronics |
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STR71XF Datasheet(HTML) 8 Page - STMicroelectronics |
8 / 77 page System architecture STR71xF 8/77 Realtime Clock (RTC) The RTC provides a set of continuously running counters driven by the 32 kHz external crystal. The RTC can be used as a general timebase or clock/calendar/alarm function. When the STR710 is in Standby mode the RTC can be kept running, powered by the low power voltage regulator and driven by the 32 kHz external crystal. UARTs The 4 UARTs allow full duplex, asynchronous, communications with external devices with independently programmable TX and RX baud rates up to 1.25 Mb/s. Smart Card Interface UART1 is configurable to function either as a general purpose UART or as an asynchronous Smart Card interface as defined by ISO 7816-3. It includes Smart Card clock generation and provides support features for synchronous cards. Buffered Serial Peripheral Interfaces (BSPI) Each of the two SPIs allow full duplex, synchronous communications with external devices, master or slave communication at up to 5.5Mb/s in Master mode and 4 Mb/s in Slave mode. I2C Interfaces The two I2C Interfaces provide multi-master and slave functions, support normal and fast I2C mode (400 kHz) and 7 or 10-bit addressing modes. One I2C Interface is multiplexed with one SPI, so either 2xSPI+1x I2C or 1xSPI+2x I2C may be used at a time. HDLC interface The High Level Data Link Controller (HDLC) unit supports full duplex operation and NRZ, NRZI, FM0 or MANCHESTER protocols. It has an internal 8-bit baud rate generator. A/D Converter The Analog to Digital Converter, converts in single channel or up to 4 channels in single- shot or round robin mode. Resolution is 12-bit with a sampling frequency of up to 1 kHz. The input voltage range is 0-2.5V. Watchdog The 16-bit Watchdog Timer protects the application against hardware or software failures and ensures recovery by generating a reset. I/O Ports The 48 I/O ports are programmable as Inputs or Outputs. External Interrupts Up to 14 external interrupts are available for application use or to wake-up the application from STOP mode. |
Similar Part No. - STR71XF_07 |
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Similar Description - STR71XF_07 |
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